CN110479790A - A kind of bar manufacturing process for fastener - Google Patents
A kind of bar manufacturing process for fastener Download PDFInfo
- Publication number
- CN110479790A CN110479790A CN201910854575.2A CN201910854575A CN110479790A CN 110479790 A CN110479790 A CN 110479790A CN 201910854575 A CN201910854575 A CN 201910854575A CN 110479790 A CN110479790 A CN 110479790A
- Authority
- CN
- China
- Prior art keywords
- bar
- manufacturing process
- disk
- blanking
- circle blanking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/04—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
- C21D8/065—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires of ferrous alloys
Abstract
The invention discloses a kind of bar manufacturing process for fastener, are related to technical field of fastener manufacture, include the following steps: S1, and diameter is used to carry out blanking for the 304 disk round bars of 22mm；S2 is heat-treated again, and solid solubility temperature is 1050 ± 10 DEG C；S3 makes annealing treatment for the first time；S4, wire drawing, disk circle Blanking to diameter 21mm；S5, second of annealing；S6, wire drawing, disk circle Blanking to 18.46 ± 0.3mm of diameter.Aiming at the problem that existing disk round bar is difficult to use in batch production non-standard, the present invention changes solid solubility temperature, the material property of disk round bar is made to can satisfy the nonstandard bolt of processing by being dissolved again to disk round bar.
Description
Technical field
The present invention relates to technical field of fastener manufacture, more specifically, it relates to a kind of bar system for fastener
Make technique.
Background technique
Currently, the steel manufactured by Baosteel, Yongxing, green hill, this several big main steel mill of northeast, are 304 stainless steels
Disk circle, by 1200 DEG C of high temperature solid solutions, the strength of materials is 565~585Mpa, and after flow harden, tensile strength also just be can only achieve
861Mpa。
But some special fields, such as food, medicine, aviation, nuclear energy, high-speed rail are wanted in non-standard fastener industry
The bolt (central diameter is having a size of 18.46mm) for seeking M20 should have tensile strength greater than 880Mpa.
In the prior art, there are following several schemes:
A uses diameter for 304 stainless steel discs of 21mm circle, twice annealing wire drawing twice to 18.46mm, the tensile strength of finished product
It at most can only achieve 800Mpa, technique requirement be not achieved；
B uses diameter for 304 stainless steel discs of 22mm circle, since wire-drawing equipment has the upper limit of its wire-drawing operation, wire-drawing equipment
Can it is quick-fried fall, cannot achieve wire-drawing operation；
C uses diameter for 304 stainless steel discs of 21.5mm circle, and twice annealing wire drawing twice is to 18.46mm, although can satisfy
Intensity requirement, but for domestic most steel mills, will not provide and produce in batches 304 stainless steel discs of 21.5mm
Circle.
Summary of the invention
Aiming at the problem that existing disk round bar is difficult to use in batch production non-standard, the object of the present invention is to provide a kind of use
In the bar manufacturing process of fastener, the raw material provided by the existing steel mill of technologic improvement is greater than convenient for producing tensile strength
The M20 bolt of 880Mpa.
To achieve the above object, the present invention provides the following technical scheme that
A kind of bar manufacturing process for fastener, includes the following steps:
S1 uses diameter to carry out blanking for the 304 disk round bars of 22mm；
S2 is heat-treated again, and solid solubility temperature is 1050 ± 10 DEG C；
S3 makes annealing treatment for the first time；
S4, wire drawing, disk circle blanking wire drawing to diameter 21mm；
S5, second of annealing；
S6, wire drawing, disk circle Blanking to 18.46 ± 0.3mm of diameter.
Through the above technical solutions, the 304 disk round bar of standard provided by steel mill is dissolved again, and by the temperature of solid solution
1050 ± 10 DEG C are changed into, makes disk round bar after twice annealing stretches twice, tensile strength can reach and be greater than
The performance of 880Mpa.
Further, step S2 specifically comprises the following steps:
S21, to start to warm up heating dish circle blanking not less than 600 DEG C；
S22, disk circle blanking are heated to 1050 ± 10 DEG C, and with 1.5~2h of the temperature；
Disk circle blanking is cooled to 30 DEG C or less by S23, oil cooling or water cooling.
Through the above technical solutions, the heating dish circle blanking in a manner of high temperature heating, was completely in convenient for disk circle blanking
It is saturated solid solution condition.
Further, step S3 specifically comprises the following steps:
S31, to start to warm up heating dish circle blanking not less than 100 DEG C；
S32, disk circle blanking are heated to 250 ± 10 DEG C, and with 4~5h of the temperature；
S33, disk circle blanking are cooled to room temperature in a manner of natural cooling.
Through the above technical solutions, preliminary low-temperature annealing, the preliminary moulding and toughness for improving disk circle blanking, convenient for subsequent right
Disk circle blanking carries out wire drawing process.
Further, step S5 specifically comprises the following steps:
S51, to start to warm up heating dish circle blanking not less than 150 DEG C；
S52, disk circle blanking are heated to 350 ± 10 DEG C, and with 4~5h of the temperature；
S53, disk circle blanking are cooled to room temperature in a manner of natural cooling.
Through the above technical solutions, release metal stresses, further improve the moulding and toughness of disk circle blanking, are convenient for into one
Step ground wire drawing process.
Further, further include following steps:
S7 materialses；
S8, mechanical properties test；
S9, acidleach macroscopic examination；
S10, metal lographic examination.
Through the above technical solutions, doing further sampling Detection to the disk circle blanking after being heat-treated again, it is ensured that disk circle
Blanking satisfactory quality.
Further, step S8 specifically comprises the following steps；
S81, tension test extract two samples, under room temperature environment, by the regulation of GB/T228.1-2010 out of every batch of bar
Testing longitudinal, it is qualified products that tensile strength, which is greater than 880Mpa,；
S82, zero degree impact test extract six samples, in the environment of zero degrees celsius, by GB/T229- out of every batch of bar
2007 regulation testing longitudinal, it is qualified products that impact strength, which is greater than 41J,.
Through the above technical solutions, from the sample of stretch-proof and zero degree impact direction detection plate circle blanking.
Further, in step S9, the specific steps of acidleach macroscopic examination are as follows: take a sample out of every batch of bar, press
The regulation of GB/T226-1991 carries out acidleach macroscopic examination, and is evaluated by the judge picture in GB/T1979-2001, in bar
On cross section acidleach low power test paper, General Loosen, center porosity, segregation are no more than 2 grades.
Through the above technical solutions, ensure bar section there is no the visible shrinkage cavity of eye, bubble, flange, be mingled with, crackle,
The defects of white point, folding.
Further, in step S10, the specific steps of metal lographic examination an are as follows: sample is taken from every batch of bar, by GB/
A method detects non-metallic inclusion in T10561-2005, and is evaluated by the grading map in GB/T10561-2005 appendix A；
All kinds of non-metallic inclusions, A, B class should be not more than 1.5 grades respectively, and C, D, DS class should be not more than 2 grades respectively.
Through the above technical solutions, the content of detection plate round bar inclusion, convenient for finding underproof disk circle in time
Bar.
Further, in step S8, if mechanical properties test is unqualified, allow to take double amount sample to underproof item
Mesh makees retrial；
If retrial is still unqualified, the corresponding all parts of the heat treatment batch, which be should give, to be scrapped.
Through the above technical solutions, retrial detection obtains contingency for excluding testing result.
Further, retrial sample should be cut in the adjacent parts of failed test sample.
Through the above technical solutions, ensuring the stability of detection data, convenient for comparison, underproof reason is found out.
Compared with prior art, the beneficial effects of the present invention are:
(1) by the way that 304 disk round bar of the standard provided by steel mill to be dissolved again, and the temperature of solid solution is changed into 1050 ± 10
DEG C, make disk round bar after twice annealing stretches twice, tensile strength can reach the performance greater than 880Mpa；
(2) further, it is stretched twice through twice annealing, is conducive to accurately wire drawing and goes out to meet the disk pole of production requirement
Material then carries out the batch production of non-standard fastener；
(3) further, by doing performance detection to the bar heated again, it is ensured that the bar for producing nonstandard in batches meets
Corresponding tensile property requirement.
Detailed description of the invention
Fig. 1 is process flow diagram of the invention.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
A kind of bar manufacturing process for fastener, as shown in Figure 1, including the following steps:
S1 cuts off 15% back-end crop 5% to the 304 disk round bars that diameter is 22mm, completes blanking；
Original disk round bar is heat-treated by S2 again, and solid solubility temperature is changed to 1050 ± 10 DEG C；Specifically comprise the following steps:
S21, to start to warm up heating dish circle blanking not less than 600 DEG C；
S22, after disk circle blanking is heated to 1050 ± 10 DEG C, with 1.5~2h of the temperature；
Disk circle blanking is cooled to 30 DEG C or less by S23, oil cooling or water cooling in 2-3 minutes.
S3 makes annealing treatment for the first time；Specifically comprise the following steps:
S31, to start to warm up heating dish circle blanking not less than 100 DEG C；
S32, disk circle blanking are heated to 250 ± 10 DEG C, and with 4~5h of the temperature；
S33, disk circle blanking are cooled to room temperature in environment in a manner of natural cooling indoors.
S4, wire drawing, using wire drawing machine by disk circle blanking wire drawing to diameter 21mm, the tensile resistance of disk circle blanking is at this time
620~650Mpa；
S5, second of annealing；Specifically comprise the following steps:
S51, to start to warm up heating dish circle blanking not less than 150 DEG C；
S52, disk circle blanking are heated to 350 ± 10 DEG C, and with 4~5h of the temperature；
S53, disk circle blanking are cooled to room temperature in a manner of natural cooling.
S6, wire drawing, disk circle Blanking to 18.46 ± 0.3mm of diameter, the tensile resistance of disk circle blanking is 880~
900Mpa。
S7 materialses, and sample is taken respectively from this batch of maximum hardness and the bar of lowest hardness.
S8, mechanical properties test；Specifically comprise the following steps:
S81, tension test extract two samples, under room temperature environment, by the regulation of GB/T228.1-2010 out of every batch of bar
Testing longitudinal, it is qualified products that tensile strength, which is greater than 880Mpa,；
S82, zero degree impact test extract six samples, in the environment of zero degrees celsius, by GB/T229- out of every batch of bar
2007 regulation testing longitudinal, it is qualified products that impact strength, which is greater than 41J,.
Wherein, if mechanical property test discovery is unqualified, allow that double amount sample is taken to make underproof project
Retrial (retrial sample should be cut in the adjacent parts of failed test sample) allows to be heat-treated again simultaneously if retrial is still unqualified
Again it tests, the condition being heat-treated again should indicate in heat treatment record, and it is right to test unqualified then heat treatment batch institute again
All parts answered, which be should give, to be scrapped.Again heat treatment must not exceed 2 times.
Material is reviewed according to CPO3T3066Rev.B " nuclear leve metal material reviews technical requirements ", if both sides of supply and demand
Check conclusion is inconsistent, using demander's conclusion as final conclusion.Test need to be cut with ontology sample in the case where demander witnesses.
S9, acidleach macroscopic examination；Specific steps an are as follows: sample is taken out of every batch of bar, by the rule of GB/T226-1991
Surely acidleach macroscopic examination is carried out, and is evaluated by the judge picture in GB/T1979-2001, is tried in bar cross section acidleach low power
On paper, should not have macroscopic shrinkage cavity, bubble, flange, be mingled with, crackle, white point, fold the defects of；General Loosen, center are dredged
Pine, segregation are no more than 2 grades.
S10, metal lographic examination；Specific steps an are as follows: sample is taken from every batch of bar, by A method in GB/T10561-2005
Non-metallic inclusion is detected, and is evaluated by the grading map in GB/T10561-2005 appendix A；
All kinds of non-metallic inclusions, A, B class should be not more than 1.5 grades respectively, and C, D, DS class should be not more than 2 grades respectively.
In summary:
The present invention by the way that 304 disk round bar of the standard provided by steel mill to be dissolved again, and by the temperature of solid solution in use, change
It is 1050 ± 10 DEG C, makes disk round bar after twice annealing stretches twice, tensile strength can reach and be greater than
The performance of 880Mpa；It is stretched twice through twice annealing, is conducive to accurately wire drawing and goes out to meet the disk round bar of production requirement, after
And carry out the batch production of non-standard fastener；By doing performance detection to the bar heated again, it is ensured that non-for producing in batches
Target bar meets corresponding tensile property requirement.
The embodiment of present embodiment is presently preferred embodiments of the present invention, not limits protection of the invention according to this
Range, therefore: the equivalence changes that all structures under this invention, shape, principle are done, should all be covered by protection scope of the present invention it
It is interior.
Claims (10)
1. a kind of bar manufacturing process for fastener, which comprises the steps of:
S1 uses diameter to carry out blanking for the 304 disk round bars of 22mm；
S2 is heat-treated again, and solid solubility temperature is 1050 ± 10 DEG C；
S3 makes annealing treatment for the first time；
S4, wire drawing, disk circle blanking wire drawing to diameter 21mm；
S5, second of annealing；
S6, wire drawing, disk circle Blanking to 18.46 ± 0.3mm of diameter.
2. a kind of bar manufacturing process for fastener according to claim 1, which is characterized in that step S2 is specifically wrapped
Include following steps:
S21, to start to warm up heating dish circle blanking not less than 600 DEG C；
S22, disk circle blanking are heated to 1050 ± 10 DEG C, and with 1.5~2h of the temperature；
Disk circle blanking is cooled to 30 DEG C or less by S23, oil cooling or water cooling.
3. a kind of bar manufacturing process for fastener according to claim 2, which is characterized in that step S3 is specifically wrapped
Include following steps:
S31, to start to warm up heating dish circle blanking not less than 100 DEG C；
S32, disk circle blanking are heated to 250 ± 10 DEG C, and with 4~5h of the temperature；
S33, disk circle blanking are cooled to room temperature in a manner of natural cooling.
4. a kind of bar manufacturing process for fastener according to claim 3, which is characterized in that step S5 is specifically wrapped
Include following steps:
S51, to start to warm up heating dish circle blanking not less than 150 DEG C；
S52, disk circle blanking are heated to 350 ± 10 DEG C, and with 4~5h of the temperature；
S53, disk circle blanking are cooled to room temperature in a manner of natural cooling.
5. a kind of bar manufacturing process for fastener according to claim 1, which is characterized in that further include walking as follows
It is rapid:
S7 materialses；
S8, mechanical properties test；
S9, acidleach macroscopic examination；
S10, metal lographic examination.
6. a kind of bar manufacturing process for fastener according to claim 5, which is characterized in that step S8 is specifically wrapped
Include following steps；
S81, tension test extract two samples, under room temperature environment, by the regulation of GB/T228.1-2010 out of every batch of bar
Testing longitudinal, it is qualified products that tensile strength, which is greater than 880Mpa,；
S82, zero degree impact test extract six samples, in the environment of zero degrees celsius, by GB/T229- out of every batch of bar
2007 regulation testing longitudinal, it is qualified products that impact strength, which is greater than 41J,.
7. a kind of bar manufacturing process for fastener according to claim 5, which is characterized in that in step S9, acid
Soak the specific steps of macroscopic examination are as follows: a sample is taken out of every batch of bar, it is low to carry out acidleach by the regulation of GB/T226-1991
It examines, and is evaluated by the judge picture in GB/T1979-2001 again, it is general to dredge on bar cross section acidleach low power test paper
Pine, center porosity, segregation are no more than 2 grades.
8. a kind of bar manufacturing process for fastener according to claim 5, which is characterized in that in step S10, gold
The specific steps mutually examined are as follows: take a sample from every batch of bar, detect nonmetal inclusion by A method in GB/T10561-2005
Object, and evaluated by the grading map in GB/T10561-2005 appendix A；
All kinds of non-metallic inclusions, A, B class should be not more than 1.5 grades respectively, and C, D, DS class should be not more than 2 grades respectively.
9. a kind of bar manufacturing process for fastener according to claim 6, which is characterized in that in step S8, if
Mechanical properties test is unqualified, allows that double amount sample is taken to make retrial to underproof project；
If retrial is still unqualified, the corresponding all parts of the heat treatment batch, which be should give, to be scrapped.
10. a kind of bar manufacturing process for fastener according to claim 9, which is characterized in that retrial sample is answered
It is cut in the adjacent parts of failed test sample.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910854575.2A CN110479790B (en) | 2019-09-10 | 2019-09-10 | Bar manufacturing process for fastener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910854575.2A CN110479790B (en) | 2019-09-10 | 2019-09-10 | Bar manufacturing process for fastener |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110479790A true CN110479790A (en) | 2019-11-22 |
| CN110479790B CN110479790B (en) | 2020-12-08 |
Family
ID=68557247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910854575.2A Active CN110479790B (en) | 2019-09-10 | 2019-09-10 | Bar manufacturing process for fastener |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110479790B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111672918A (en) * | 2020-06-01 | 2020-09-18 | 江阴市利盟金属制品有限公司 | High-strength flexible shaft core drawing process for motor vehicle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105463171A (en) * | 2015-11-24 | 2016-04-06 | 西安诺博尔稀贵金属材料有限公司 | Manufacturing method for austenitic stainless steel bar used for nuclear power reactor |
| CN105506510A (en) * | 2015-12-03 | 2016-04-20 | 浙江腾龙精线有限公司 | Process for producing stainless steel wires |
| CN107675534A (en) * | 2017-11-23 | 2018-02-09 | 江阴市灵达机械制造有限公司 | The production technology of stainless steel wire rope |
| CN108342556A (en) * | 2018-02-14 | 2018-07-31 | 福建东亚机械有限公司 | A kind of piston ring high alloy wire rod contour machining procedure |
| CN108500080A (en) * | 2018-03-09 | 2018-09-07 | 泰州市大明不锈钢有限公司 | A kind of stainless steel bars round-bar pass technique |
| CN109482667A (en) * | 2018-12-11 | 2019-03-19 | 西安诺博尔稀贵金属材料有限公司 | A kind of preparation method of strong mechanical performance austenitic stainless steel spring silk material |
-
2019
- 2019-09-10 CN CN201910854575.2A patent/CN110479790B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105463171A (en) * | 2015-11-24 | 2016-04-06 | 西安诺博尔稀贵金属材料有限公司 | Manufacturing method for austenitic stainless steel bar used for nuclear power reactor |
| CN105506510A (en) * | 2015-12-03 | 2016-04-20 | 浙江腾龙精线有限公司 | Process for producing stainless steel wires |
| CN107675534A (en) * | 2017-11-23 | 2018-02-09 | 江阴市灵达机械制造有限公司 | The production technology of stainless steel wire rope |
| CN108342556A (en) * | 2018-02-14 | 2018-07-31 | 福建东亚机械有限公司 | A kind of piston ring high alloy wire rod contour machining procedure |
| CN108500080A (en) * | 2018-03-09 | 2018-09-07 | 泰州市大明不锈钢有限公司 | A kind of stainless steel bars round-bar pass technique |
| CN109482667A (en) * | 2018-12-11 | 2019-03-19 | 西安诺博尔稀贵金属材料有限公司 | A kind of preparation method of strong mechanical performance austenitic stainless steel spring silk material |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111672918A (en) * | 2020-06-01 | 2020-09-18 | 江阴市利盟金属制品有限公司 | High-strength flexible shaft core drawing process for motor vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110479790B (en) | 2020-12-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104016333B (en) | A kind of preparation method of isostatic pressed micro crystal graphite goods | |
| CN104451082B (en) | A kind of preparation method of the average grain size 304 austenitic stainless steels less than 100nm | |
| CN104846273B (en) | The high manganese steel sheet of cold plasticity and processing technique thereof | |
| CN104131225B (en) | Low cost ultralow temperature nickel steel and manufacture method thereof | |
| US11951530B2 (en) | High-strength stainless steel rotor and method for preparing the same | |
| Guo et al. | Microstructure and mechanical properties of an oxide dispersion strengthened ferritic steel by a new fabrication route | |
| CN107287400B (en) | A kind of method of determining 718H pre-hardened plastic mold steel tempering temperature | |
| CN104841823A (en) | Forging process for improving 1Cr11Ni2W2MoV forging grain size | |
| CN105798539A (en) | Method for manufacturing high-temperature alloy bolt | |
| CN110479790A (en) | A kind of bar manufacturing process for fastener | |
| Shiba et al. | Development of the toughness-improved reduced-activation F82H steel for demo reactor | |
| CN101607289A (en) | Hot punching production process of high-strength angle steel | |
| CN110243675A (en) | A method of assessment various deformation condition influences TRIP/TWIP plate property | |
| CN104818432B (en) | A kind of alloy material for Steam Turbine rotor and preparation method thereof | |
| CN103540728A (en) | Method of manual accelerated simulation of natural aging of rapid cooling steel plate | |
| CN103993144A (en) | Method for production of H13 die steel by bloom continuous casting | |
| CN106734791A (en) | A kind of control technique of PH13 8Mo forging forging temperature on horizontal forging and upsetting machine | |
| CN103643116A (en) | Welding gas cylinder and manufacturing technology of hot rolled steel plate of welding gas bottle | |
| CN105154652A (en) | Heat treatment method for improving mechanical property of rough and large polished blocker-type forged shaft | |
| CN104726660A (en) | Forging method for increasing corrosion resistance of 316 LN stainless steel | |
| CN103614528A (en) | Forging method of producing steel balls with phi 150-180mm by adopting round steel with phi 110mm | |
| Cao et al. | Experimental research on physical and mechanical parameters of matured bottom stalk of the reed for harvester design | |
| CN109735696A (en) | A kind of method of Austenitic stainless steel forging crystal grain refinement | |
| Chen et al. | Effect of scanning speed on microstructure and properties of 12CrNi2Re alloy steel prepared by laser additive manufacturing | |
| CN110129683A (en) | A kind of high intensity bridge Suo Gang and its manufacturing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |